Upflush Toilets: Where Does the Waste really go?

Waste from an upflush toilet goes to a holding tank or a macerating unit for disposal. Upflush toilets are a popular alternative to traditional toilets, especially in basements, attics and other areas where plumbing cannot be installed.

Unlike conventional toilets, upflush toilets are specifically designed to handle waste in a unique manner. They utilize advanced technology that allows waste to be transported upward, defying gravity, to reach the main sewer or septic line.

This innovation offers homeowners and businesses alike the freedom to install bathrooms in locations that were previously considered unfeasible, such as basements, garages, or even converted spaces in commercial buildings.

In this exploration of upflush toilets and their waste disposal process, we will delve into the inner workings of these systems, the different components involved, and the environmentally conscious practices they often employ.

By the end of this discussion, you will gain a comprehensive understanding of how upflush toilets efficiently manage waste and contribute to more sustainable plumbing practices. So, let’s embark on this informative journey to uncover the intriguing world of upflush toilets and the path they pave for waste disposal.

The Basics Of Upflush Toilets

Upflush toilets, also known as macerating toilets, are becoming more popular, especially in areas where sewage lines are difficult or impossible to install. The way they work is quite simple: waste is ground up and mixed with water in a small holding tank behind the toilet.

Then, a macerator pump forces the mixture up and out of the tank and into a pipe where it can be directed to a septic tank or sewer system. One major benefit of upflush toilets is their versatility; they can be installed almost anywhere in a home, including basements and garages.

Traditional toilets rely on gravity to move waste through pipes, whereas upflush toilets can pump waste uphill and over long distances. These toilets can be slightly more expensive than traditional ones, but the convenience and flexibility they offer make them a compelling option for homeowners.

The Easy Guide: Where Does The Waste Go in an Upflush Toilet

An upflush toilet is an ingenious plumbing solution that provides the convenience of a bathroom in areas where traditional gravity-based plumbing is challenging or not feasible. These innovative fixtures are commonly in basements, garages, additions, or even boats and RVs.

One of the primary concerns when considering an upflush toilet is understanding where the waste goes and how the system efficiently manages it. In this informative guide, we will delve into the inner workings of upflush toilets and explore the waste disposal process they employ.

1. Understanding Upflush Toilets:

Upflush toilets, also known as macerating toilets, function differently from traditional gravity-fed toilets. They consist of two main components: the toilet bowl and the macerator/pump unit. The macerator is a specialized grinder that breaks down solid waste and toilet paper into a fine slurry, while the pump helps move this slurry upward.

2. The Waste Disposal Process:

When you flush an upflush toilet, the waste and water from the bowl are direct to the macerator/pump unit, which is typically located behind or inside the wall. The macerator’s sharp blades efficiently grind the waste and toilet paper into a fine slurry, reducing the risk of clogs and blockages. The pump then pushes this slurry through a small-diameter discharge pipe.

3. The Vertical Discharge:

Unlike traditional toilets, which rely on gravity to move waste through large pipes buried underground, upflush toilets utilize a smaller discharge pipe. This pipe can be as narrow as 1 inch (2.54 cm) in diameter, making it easier to install in tight spaces and eliminating the need for extensive digging and pipe installation.

The discharge pipe typically runs vertically, allowing the waste to travel upward against gravity. This design enables the waste to reach the existing main sewer line or a septic tank without the necessity of a direct, underground connection.

4. Connecting to the Sewer or Septic System:

At the top of the vertical discharge pipe, there is a special fitting that connects to the existing sewer or septic system. The slurry is expell into the main plumbing system and eventually reaches the municipal sewer line or septic tank.

5. Environmental Considerations:

Upflush toilets have evolved to be more environmentally conscious over time. Many models now feature water-saving options, reducing the overall water consumption per flush. More the efficient maceration process ensures that waste is leading to fewer with clogs and blockages in the sewage system.

6. Maintenance and Care:

To ensure optimal performance and longevity, it is essential to follow the manufacturer’s maintenance guidelines. Regularly inspect the macerator and pump, and avoid flushing items that can cause damage, such as sanitary products, wipes, or excessive amounts of toilet paper.

Also Read: Is Your Upflush Toilet a Noisy Nightmare?

Where Does Waste From Upflush Toilets Go?

Upflush toilets are a popular choice for homes where it’s difficult to install a traditional toilet. When dealing with waste disposal, however, it’s important to understand the map testing system for toilet efficiency. Map ratings represent the capability of toilets to flush waste.

The higher the rating, the better the toilet. While traditional toilets often have higher ratings than upflush toilets, the rating for an upflush toilet is still adequate. Upflush toilets dispose of waste through maceration, using a grinder to break it down into slurry.

The waste then flows through a pipe to either a septic tank or sewage treatment plant. Upflush toilets are an eco-friendly alternative and produce less waste compared to traditional toilets. However, there are still challenges in the treatment and disposal of waste from upflush toilets.


Frequently Asked Questions On Where Does The Waste Go In An Upflush Toilet?

How Does An Upflush Toilet Work?

An upflush toilet pumps waste out of a holding tank into a sewer or septic system.

What Kind Of Waste Can An Upflush Toilet Handle?

An upflush toilet can handle human waste, toilet paper, and gray water from sinks and showers.

Do All Upflush Toilets Need Electrical Wiring?

Not all upflush toilets require electrical wiring; some models operate using water pressure.

How Often Should I Empty The Holding Tank In An Upflush Toilet?

The frequency of tank emptying depends on your usage and holding tank capacity, but it is typically every few days.

Can I Install An Upflush Toilet In My Basement Or On A Concrete Slab?

Yes, an upflush toilet can be install in a basement, on a concrete slab, or anywhere without direct access to a sewer or septic line.


An upflush toilet offers an affordable and efficient waste disposal solution for those who are looking to install a bathroom below the sewer line or in a basement. Understanding how the waste is manag through an upflush toilet system is crucial for ensuring proper maintenance and avoiding any potential issues.

The use of macerating blades and a pump enables the toilet to forcefully pump the waste up to the main sewer line or septic tank. While some may have concerns about the potential for odor or leakage, proper installation and maintenance can prevent these issues from occurring.

Overall, upflush toilets are a practical, convenient and hygienic solution for those in need of a below-grade bathroom or looking to upgrade their older bathroom infrastructure. By investing in an upflush toilet, homeowners can ensure efficient and safe waste disposal without the need for costly and complicated renovations.

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